Disconnecting switch



Marchu, 1925. l 1,530,365

C. H. HILL DISCONNECTING SWITCH Filed Deo. 15, 1925 IVM/entol" i' Charles ll. llill, by

llls 'Attorney 'Patented Mar. 17, 1925.-

asf

UNITED STA' CHARLES H. HILL, OF BCHENETDY, NEW YRK, ASSIGNGB. T0 GENERAL ELECTRIC GGMIHY, A CORPORATIQN OF NEW YORK.

:orsoonnnofmne ewrront.

application meu member 15, 1923. serial 1ro. 680,991.

To all whom it may cof/wenn:

Be it known that l, Ciminna H. Him, a citizen of the United Stategvreeidiiig at Schencctad f, in the county ot' Schenectady, 5 Stato of hcw York, have invented certain lnew and useful Improvemente in Disconnecting Switches, of which thefollowing is a specification.

My invention' relates to high tension Vdieconnecting Switches suited for outdoor use, and has for its object the provision of means for insuring that the operation of auch a switch is not impaired by the accumulation of ice, snow or other material on the switch contacts.

ln the construction of transmission and` distribution systems it is customary, to provide disconnecing switches arranged to difconnect or ieolate sections of line, transfer lines, to b pass and ieola-te tranai'orinere, oil

switches, ightuing arreeftere and other electrical apparatus for purroses of inspection and repair. These switc ies when arranged for outdoonuse are subject to conditions Where sleet, snow or lthe like accumulates on the contact members blocking or rendering diilicult the. operation of the switches. Where the system in operated ai, very high voltages the contact rnemhere are furthcr 3o subject to deterioration by reason ci corona. ln accordance with any invention means are provided foi proteccing She switch contact both from corona and from accumulations of ice and snow whether the switch be in its opener closed position.

My invention will he heiter understood/on reference to the following ldescription when considered in connection with the accoma panying drawing and its scope will he pointed out by the appended claims,

Referring now to the drawing, Fig.. l shows a switch in which my invention has been embodied, the switch being illustrated aS in closed position; and Fig. 2 is a similar View showing the switch in open position.

The switch comprises contacts l and ar-v ranged toibo moved relatively to one another for the purpose of opening a circuit in con- Aductive relation with ,me switch leads' and 4. The Contact, l is Shown as mounted on a stationary insulator 5 and surrounded hy a metallic hood 6 in conductive relation there with. T he Contact 2 is shown ae surrounded by a metal hood l0 and is supported h a movable insulator? mounted on a truc 8 which may be moved along the track 9 for the purpose of bringing the contacts 1 and 2 into and out of engagement with each miicr in a' manner disclosed in the patent to Frank PQ Lawler No. 1,464,368, Auo'ust 7, 1923. The hood l() which surrounds the contactZ is arranged no envclopthe hood 6 in closed position of the switch. and is made Somewhat larger than the hood 6 in order to insure that, an accumulation of ice or snow on the hood 6 will not interfere with the o eration of the switch. As, indicated in t e drawing, the edges of the hoods 6 and 10,

as well as other parts subject to high voltage are rounded or ymade of a forni to minimize corona discharge. To this end where the hoods are made of this metal the edges ma he spun over small wooden rings if desire It will be observed that each oi the contai-,ts is protected against, slcet or snow in the Open position of the switch as well as in the closed position. 1 The switch contacts mayA therefore be opened or closed at any time without trouble from accumulations of elect or snow.

While my invention has been described and illustrated as applied to a switch hav ing one Contact arranged to move in a, rectilinear direction it is obvious that it. has

equal utility when both the contacts are arranged to lnuove rectilinearly or when either one on loo'th of the contacts are pivotcd to rotate in 'fi-substantially horizontal plane into and out of engagement with each other. I accordingly do notI Wish to be restricted to the particular forms of construction' dis closed herein by way of example for the purpose of setting forth my invention in accordance with lthe atent statutes. The terms of theappendexl) claims are, therefore, not restricted to the precise structure dian closed, but are intended to cover all changes and modifications within the spirit and scope of my invention.

W'hat l claim as new and desire to secure by Letters Patent of the United Stat-es, is

1, A high tension dissconn'cctina y:switch wherein contacte relatively niovahle in a horizontal direction are arranged' to o en and close a circuit, characterized by the :wt that each consact is immovably related with means for protecting it from Sleen, snow and the like in, both he open and closed positions of said switch.

2. A. high tension disconnecting switch wherein contacts' relatively movable in e horizontal direct-ion ein. arranged to open zindclose aJ circuit, Connu shield im movahly fixed to each L iY Vioi protecting it from Sleen, snow w the like in both the open and elosed posi" ons of seid switch.

3.1i. high tension diseonneet-ing switch wherein relatively movable contee-Ls are ai'- mnged to open and. close zi eii'eui, comprising e member consufncted to surround each Contact to protect it from. slee-la snow and the like and prevent corone discharge, the

member Surrounding one of said contacts he.-V

4. A high tension? disconnecting switch wherein urelaively movable Contacts 'are ui'- ianged to open and close e circuit, comprising a housing member covering each conmct lo protect it from sleeb7 snow and the like, the 1ne1nber` covering one of seid contacts being ai'i'angedito moveinto the menibeicovei'ing another/of said contacts upon engd 1;emenb of said contacts.

in witness wheieofjl' have hereunto set my hand this 14th dayof Dec'elnheig-ll93.

CHARLns H. HILL; 

